rhsa-2021_0834
Vulnerability from csaf_redhat
Published
2021-03-15 14:36
Modified
2024-11-15 07:30
Summary
Red Hat Security Advisory: openvswitch2.11 security update

Notes

Topic
An update for openvswitch2.11 is now available in Fast Datapath for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Security Fix(es): * openvswitch: limitation in the OVS packet parsing in userspace leads to DoS (CVE-2020-35498) * lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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          "category": "description",
          "text": "A flaw was found in multiple versions of Open vSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.",
          "title": "Vulnerability description"
        },
        {
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          "text": "lldp/openvswitch: denial of service via externally triggered memory leak",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform 13\u0027s openvswitch package will receive it\u0027s fixes from Fast Datapath.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
          "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-27827"
        },
        {
          "category": "external",
          "summary": "RHBZ#1921438",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921438"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-27827",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-27827"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-27827",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27827"
        },
        {
          "category": "external",
          "summary": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html",
          "url": "https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html"
        }
      ],
      "release_date": "2021-01-13T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-03-15T14:36:18+00:00",
          "details": "For details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.src",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-test-0:2.11.3-86.el7fdp.noarch",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:0834"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.src",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-test-0:2.11.3-86.el7fdp.noarch",
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            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "lldp/openvswitch: denial of service via externally triggered memory leak"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Joakim Hindersson \u003cjoakim.hindersson@elastx.se\u003e"
          ]
        }
      ],
      "cve": "CVE-2020-35498",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2020-12-03T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1908845"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openvswitch: limitation in the OVS packet parsing in userspace leads to DoS",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform 13\u0027s openvswitch package will receive it\u0027s fixes from Fast Datapath.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
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          "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.src",
          "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.x86_64",
          "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.ppc64le",
          "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.s390x",
          "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.x86_64",
          "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.ppc64le",
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          "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.ppc64le",
          "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
          "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-35498"
        },
        {
          "category": "external",
          "summary": "RHBZ#1908845",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1908845"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-35498",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-35498"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-35498",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35498"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2021/02/10/4",
          "url": "https://www.openwall.com/lists/oss-security/2021/02/10/4"
        }
      ],
      "release_date": "2021-02-10T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-03-15T14:36:18+00:00",
          "details": "For details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
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            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.src",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.ppc64le",
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            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-test-0:2.11.3-86.el7fdp.noarch",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:0834"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.src",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-debuginfo-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-devel-0:2.11.3-86.el7fdp.x86_64",
            "7Server-RH7-Fast-Datapath:openvswitch2.11-test-0:2.11.3-86.el7fdp.noarch",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.ppc64le",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.s390x",
            "7Server-RH7-Fast-Datapath:python-openvswitch2.11-0:2.11.3-86.el7fdp.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openvswitch: limitation in the OVS packet parsing in userspace leads to DoS"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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